The add-on is available for free and works with Blender 2.79 or higher.
3D Artist and Developer, known as ucupumar, has released a new add-on that should definitely help those artists who use Blender as their go-to texturing software. Meet Ucupaint, a free Blender add-on that allows its users to manage texture layers for Eevee and Cycles renderer. According to the developer, the add-on works with Blender 2.79+, but some of the more advanced features are only available on Blender 2.80 or higher.
Ucupaint locations in Blender 2.79 and Blender 2.80+: